http://mashable.com/2017/07/23/youtube-kills-video-editor-tool/

If you're working on a long editing project directly on YouTube, you now have a deadline.

The Google-owned video platform announced on Friday it will shut down its built-in Video Editor feature on Sept. 20.

The toolkit has been around since 2010, but has fallen on hard times. One of Google's community managers wrote in the YouTube Help Forum that the axing comes as a result of "limited usage of these features." As few as 0.1 percent of all creators use the built-in video editing tools, a YouTube spokesperson told us, so describing its popularity as "limited usage" is a bit generous.